Caffeine is in fact very difficult to kick. It is also the most popular DRUG in the world. This is why people suffer withdrawal, if youve ever tried to kick caffeine cold turkey it can be one of the worst headaches of your life.
http://www.xs4all.nl/~4david/caffeine.html
Along with sugar, caffeine is one of the most abused drugs on the planet.
Ive cut out almost everything in my life except caffeine as well . I dont eat meat, i try to stay away from all refined sugar, havent been drinking at all.
I like red bulls, but coffee is too much for me.;)